I,m going to an RDS soon but not for HD/SD. I have an 870 with a Surefire and Glock 27 with night sights for that, it suits my personal home layout. The RDS (Aimpoint Pro, Eotech, or tritium version) will be for range fun or shtf (God forbid)(don't like the shtf phrase). To each his own.......... DOC